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SEGMENT REPORTING (Details 2) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Premises & equipment, net    
Premises and equipment, net $ 126,521us-gaap_PropertyPlantAndEquipmentNet $ 127,759us-gaap_PropertyPlantAndEquipmentNet
United States    
Premises & equipment, net    
Premises and equipment, net 86,043us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= country_US		 88,274us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= country_US
India    
Premises & equipment, net    
Premises and equipment, net 25,952us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= country_IN		 27,082us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= country_IN
Luxembourg    
Premises & equipment, net    
Premises and equipment, net 11,430us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= country_LU		 9,059us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= country_LU
Philippines    
Premises & equipment, net    
Premises and equipment, net $ 3,096us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= country_PH		 $ 3,344us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= country_PH